CN103562617A - Light guide plate equipped with protective film - Google Patents
Light guide plate equipped with protective film Download PDFInfo
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- CN103562617A CN103562617A CN201280026573.0A CN201280026573A CN103562617A CN 103562617 A CN103562617 A CN 103562617A CN 201280026573 A CN201280026573 A CN 201280026573A CN 103562617 A CN103562617 A CN 103562617A
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- lgp
- diaphragm
- pressure roller
- roller
- mould
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Planar Illumination Modules (AREA)
- Laminated Bodies (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
A light guide plate equipped with a protective film, provided with a light guide plate having a surface on which convex portions have been formed, and a protective film bonded to the surface on which the convex portions have been formed. Subsequent to the bonding of the protective film to the light guide plate heated to 40 DEG C, the peel strength between the light guide plate and the protective film is 0.1-0.8 N/25 mm. Subsequent to the bonding of the protective film to the light guide plate heated to 70 DEG C, the peel strength between the light guide plate and the protective film is 0.1-0.8 N/25 mm.
Description
Technical field
The present invention relates to the LGP of diaphragm and for the diaphragm of this LGP.
Background technology
The known surface at acrylic resin board of using as LGP is fitted with the LGP with diaphragm (for example, with reference to patent documentation 1) of diaphragm.The surface of this acrylic resin board is smooth.
Patent documentation 1: Japanese kokai publication hei 8-170056 communique
In recent years, having the surperficial LGP (so-called shape LGP) that is formed with protuberance is attracted attention.The inventor has studied to the situation of the surface laminating diaphragm that is formed with protuberance of LGP.Yet, clear and definite following situation, that is, according to the characteristic of diaphragm, while cutting off with the size of regulation after diaphragm fits in LGP, peel off from LGP sometimes the end of diaphragm.In addition, also clear and definite following situation, that is, according to the characteristic of diaphragm, when diaphragm is peeled off from LGP, do not apply excessive power and be just difficult to single and just LGP peeled off.These problems are in the situation that the surface of LGP is smoothly can not produce, and in the situation that the surface of LGP is formed with the problem that protuberance produces.
Summary of the invention
The present invention In view of the foregoing completes, and object is to provide the outstanding LGP with diaphragm in the surface that is formed with protuberance of LGP and the adhesiveness between diaphragm and peel property and for the diaphragm of this LGP.
In order to solve above-mentioned problem, the LGP with diaphragm of one aspect of the present invention possesses: have the surperficial LGP that is formed with protuberance; And the diaphragm that fits in the above-mentioned surface that is formed with raised part; above-mentioned LGP and the peel strength between said protection film that said protection film fits in after the above-mentioned LGP that is heated to 40 ℃ are 0.1～0.8N/25mm, and above-mentioned LGP and the peel strength between said protection film that said protection film fits in after the above-mentioned LGP that is heated to 70 ℃ are 0.1～0.8N/25mm.
Peel strength between LGP and diaphragm is less than in the diaphragm of 0.1N/25mm, when tripping protection film and LGP, and the trend that exists the end of diaphragm easily to peel off from LGP.On the other hand, in having possessed the LGP with diaphragm that above-mentioned peel strength is diaphragm more than 0.1N/25mm, even if cut off the LGP be fitted with diaphragm, also suppress the situation that peel off from LGP the end of diaphragm.Thus, can obtain the outstanding LGP with diaphragm of the surface that is formed with protuberance of LGP and the adhesiveness between diaphragm.
Peel strength between LGP and diaphragm surpasses in the diaphragm of 0.8N/25mm, and when diaphragm is stripped from from LGP, existence does not apply excessive power and is just difficult to the trend by once LGP being peeled off.On the other hand, in having possessed the LGP with diaphragm that above-mentioned peel strength is the diaphragm below 0.8N/25mm, when diaphragm is stripped from from LGP, not applying excessive power just can be by once peeling off diaphragm.Thus, can obtain the outstanding LGP with diaphragm of the surface that is formed with protuberance of LGP and the peel property between diaphragm.
After said protection film being fitted in to the above-mentioned LGP that is heated to 40 ℃; above-mentioned LGP and the peel strength between said protection film of at 70 ℃, carrying out after the heat treatment of 40 minutes can be 0.1～0.8N/25mm; after said protection film being fitted in to the above-mentioned LGP that is heated to 70 ℃, above-mentioned LGP and the peel strength between said protection film of at 70 ℃, carrying out after the heat treatment of 40 minutes can be also 0.1～0.8N/25mm.
In this case; even if the LGP with diaphragm is carried out at 70 ℃ heat treatment in 40 minutes in rear operation, also can obtain the outstanding LGP with diaphragm of the surface that is formed with protuberance of LGP and the adhesiveness between diaphragm and peel property.
The diaphragm of one aspect of the present invention is for the above-mentioned LGP with diaphragm.
According to the present invention, provide the outstanding LGP with diaphragm of the surface that is formed with protuberance of LGP and the adhesiveness between diaphragm and peel property and for the diaphragm of this LGP.
Accompanying drawing explanation
Fig. 1 means the summary construction diagram of manufacturing installation of the LGP with diaphragm of embodiment.
Fig. 2 is the stereogram that schematically shows the structure of LGP.
Fig. 3 schematically shows the cutaway view that is formed at the recess of roller mould and is formed at the protuberance of LGP.
Fig. 4 is the cutaway view of the LGP with diaphragm of embodiment.
Fig. 5 means the flow chart of step of manufacture method of the LGP with diaphragm of embodiment.
The specific embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are at length described.In the description of the drawings, identical or equal key element is used to identical mark, and the repetitive description thereof will be omitted.
(with the manufacturing installation of the LGP of diaphragm)
Fig. 1 means the summary construction diagram of manufacturing installation of the LGP with diaphragm of embodiment.The manufacturing installation 100 of the LGP with diaphragm shown in Fig. 1 is the device of manufacture that can be used in the LGP with diaphragm of present embodiment.Manufacturing installation 100 with the LGP of diaphragm possesses the manufacturing installation 50 of LGP, the laminating apparatus 70 of diaphragm and shearing device 80.
The manufacturing installation 50 of LGP possesses: by the resin of heating and melting state extrude continuously to obtain continuous resin sheet 60 mould 51, the continuous resin sheet 60 of extruding from mould 51 is pressed from the both sides of thickness direction first by pressure roller 52A and second by pressure roller 52B.According to demand, the manufacturing installation 50 of LGP also can possess pony press 52D by the leading portion of pressure roller 52A first.Pony press 52D has with first by the identical structure of pressure roller 52A.Pony press 52D clamps continuous resin sheet 60 to press between pony press 52D and first is by pressure roller 52A.The manufacturing installation 50 of LGP possesses for dropping into the resin input port 57 of the resin that becomes raw material and for extruding from resin input port the extruder 58 of 57 resins that drop into.
First is configured to each other and can rotates around parallel rotating shaft by pressure roller 52B by pressure roller 52A and second.By first, by pressure roller 52A and second, by pressure roller 52B, be configured in the thickness direction separation of resin sheet 60 continuously, mutual side face interval is each other set corresponding to the thickness of continuous resin sheet 60.As shown in Figure 3, second, by the side face of pressure roller 52B, be formed with roller mould 53, this roller mould 53 is with corresponding to the concaveconvex shape of continuous resin sheet 60 transfer printings.Details aftermentioned.Second is equivalent to shaped rollers by pressure roller 52B.Possess second of roller mould 53 and also claim to be transfer roll by pressure roller 52B.Thus, manufacture LGP 30.
The laminating apparatus 70 of diaphragm possesses: the LGP 30 of the manufacturing installation 50 from LGP being supplied with from the both sides of thickness direction and to the diaphragm 40 and 42 of its two sides laminating, press first by pressure roller 72A and second by pressure roller 72B; And the diaphragm roller 72C and the 72D that are wound with respectively diaphragm 40 and 42.Diaphragm 40 is supplied to first by pressure roller 72A from diaphragm roller 72C.Diaphragm 42 is supplied to second by pressure roller 72B from diaphragm roller 72D.Diaphragm is also referred to as shielding film.Diaphragm 42 also can not be fitted in LGP 30.In this case, the film roller 72D that do not need protection.
Shearing device 80 is cut to the LGP 30 that is fitted with the diaphragm 40,42 of supplying with from the laminating apparatus 70 of diaphragm the size of regulation.Thus, manufacture the LGP 90 with diaphragm.
(LGP)
Fig. 2 is the stereogram that schematically shows the structure of LGP.Figure 2 illustrates a part for LGP 30.LGP 30 can for example, for example, as the LGP that is equipped on the planar light source device (backlight) of transmission image display device (liquid crystal display).As planar light source device, can there is for example the light sources such as LED of the side 33 that is disposed at LGP 30 and by the light of 33 incidents of the side from LGP 30 to the edge-light type planar light source device of face side output etc.
Conventionally, for the face of the back side 32(of LGP 30 side contrary with surface 31), implement to make the irreflexive reflection processing of light of 33 incidents from the side.As printing, except serigraphy, the ink jet printing of can also giving an example, above-mentioned printing is carried out as reflection processing.Or as the method that applies reflection processing, can by Ear Mucosa Treated by He Ne Laser Irradiation, give for example the concavo-convex method of a shape, and not adopt printing.
On the surface 31 of LGP 30, be formed with a plurality of protuberances 35, a plurality of protuberances 35 extend along first direction (X-direction), and along configuring side by side with the second direction (Y direction) of this first direction quadrature.The concaveconvex shape with the protuberance 35 that is formed at surface 31 forms by transfer printing process described later.
LGP 30 is for example formed by translucent resin.The refractive index of translucent resin is generally 1.49～1.59.As the translucent resin for LGP 30, also can use the thermoplastic resin that becomes molten condition because of heating.For example, can use methacrylic resin (acrylic resin), styrene resin, carbonate resin, cyclic olefin resin, MS resin (acrylate and cinnamic copolymer) etc.As methacrylic resin, the copolymer of for example can give an example methyl methacrylate and methyl acrylate.
As the translucent resin for LGP 30, also can use according to heating and curing heat-curing resin.Also can add to the translucent resin for LGP 30 additives such as light diffusing agent, ultra-violet absorber, heat stabilizer, antistatic agent.
(roller mould)
Fig. 3 schematically shows the cutaway view that is formed at the recess of roller mould and is formed at the protuberance of LGP.Figure 3 illustrates a part for roller mould 53 and LGP 30.At roller mould 53, be formed with a plurality of recess 53a, above-mentioned a plurality of recess 53a are located at second by pressure roller 52B(shaped rollers) surface.A plurality of recess 53a are corresponding with a plurality of protuberances 35.For example, recess 53a is by pressure roller 52B(shaped rollers second) the groove upwards continuously forming in week.Spacing P between a plurality of recess 53a is conventionally more than 30 μ m, preferably more than 50 μ m.Spacing P is for example 30 μ m～800 μ m.The depth D of recess 53a is for example 30 μ m～500 μ m.Spacing P refer to adjacent recess 53a Y direction in the distance of (bottom each other) in the heart.The depth D of recess 53a refers to from the opening surface of recess 53a till the distance of the bottom of recess 53a.
As the section shape of the recess 53a of roller mould 53, can give an example semi-circular shape, half-oval shaped etc.The section shape of recess 53a also can be for having the V-shape shape of the acute angle part corresponding with prism shape.
As the preparation method of roller mould 53, the following method of for example can giving an example.First, for the surface of the metal-made roller being formed by stainless steel, iron and steel etc., such as applying the platings such as chromium plating, copper facing, nickel plating, nickel plating-phosphorus, process.Then, by what this plating face has been used to diamond tool or metal grinding tool etc., remove processing, Laser Processing or chemical etching, carry out machining shape.But the preparation method of roller mould 53 is not to be particularly limited in these methods.
Also can form after roller mould 53 on the surface of transfer roll, such as implementing the platings such as chromium plating, copper facing, nickel plating, nickel plating-phosphorus under the degree of precision of surface configuration and process not damaging.
(with the LGP of diaphragm)
Fig. 4 is the cutaway view of the LGP with diaphragm of embodiment.Figure 4 illustrates the part with the LGP 90 of diaphragm.The LGP 90 with diaphragm shown in Fig. 4 possesses: the LGP 30 with the surface 31 that is formed with protuberance 35; With the diaphragm 40 that fits in the surface 31 that is formed with protuberance 35.In the LGP 90 with diaphragm, between diaphragm 40 and LGP 30,35 of adjacent protuberances, be formed with space.The diaphragm 42 that can also possess the back side 32 that fits in LGP 30 with the LGP 90 of diaphragm.
The LGP 30 and the peel strength between diaphragm 40 that diaphragm 40 are fitted in after the LGP 30 that is heated to 40 ℃ are 0.1～0.8N/25mm.Similarly, the LGP 30 and the peel strength between diaphragm 40 that diaphragm 40 are fitted in after the LGP 30 that is heated to 70 ℃ are 0.1～0.8N/25mm.
Peel strength is a kind of JISZ0237 of following, and prepares the sample of width 25mm, and uses auto-mapping machine (AUTOGRAPH) to divide diaphragm is peeled off and the value measured along 180 ° of directions with draw speed 300mm/.
Peel strength between LGP and diaphragm is less than in the diaphragm of 0.1N/25mm, when diaphragm and LGP are cut off, and the trend that exists the end of diaphragm easily to peel off from LGP.On the other hand, in possessing the LGP 90 with diaphragm that above-mentioned peel strength is diaphragm 40 more than 0.1N/25mm, even diaphragm 40 and LGP 30 cut off and also suppress the situation that peel off from LGP 30 end of diaphragm 40.Thus, can obtain the outstanding LGP 90 with diaphragm of the surface that is formed with protuberance 35 31 of LGP 30 and the adhesiveness between diaphragm 40.
Peel strength between LGP and diaphragm surpasses in the diaphragm of 0.8N/25mm, and when diaphragm is stripped from from LGP, existence does not apply excessive power and is just difficult to the trend by once just diaphragm being peeled off.On the other hand, in possessing the LGP 90 with diaphragm that above-mentioned peel strength is the diaphragm 40 below 0.8N/25mm, when diaphragm 40 is stripped from from LGP 30, not applying excessive power just can be by once peeling off diaphragm 40.Thus, can obtain the outstanding LGP 90 with diaphragm of the surface that is formed with protuberance 35 31 of LGP 30 and the peel property between diaphragm 40.
(with the manufacture method of the LGP of diaphragm)
Fig. 5 means the flow chart of step of manufacture method of the LGP with diaphragm of embodiment.The manufacture method of the LGP with diaphragm of present embodiment for example can be implemented with the manufacturing installation 100 of the LGP with diaphragm shown in Fig. 1.As shown in Fig. 1 and Fig. 5, the manufacture method of the LGP with diaphragm of present embodiment possesses: the resin of heating and melting state is extruded to the S1 of thin slice manufacturing process with the continuous resin sheet 60 of moulding continuously from mould 51, use have be formed with roller mould 53 side face second by pressure roller 52B(shaped rollers) transfer printing process S2 by from roller mould 53 to the surface transfer of continuous resin sheet 60, the bonding process S3 of diaphragms 40 and the cut-out operation S4 that will be fitted with LGP 30 cut-outs of diaphragm 40 fit to the surface that is formed with protuberance 35 31 of the LGP 30 acquiring by transfer printing process S2.
(thin slice manufacturing process)
In thin slice manufacturing process, resin is extruded to manufacture continuous resin sheet 60 with heating and melting state continuously from mould 51.As resin, can according to heating, become for example the thermoplastic resin of molten condition.
As the mould 51 that above-mentioned resin is extruded continuously with heating and melting state, such as use with for the same metal T mould of the mould of common extrinsion pressing etc.In order from mould 51, resin to be extruded with heating and melting state, with common extrinsion pressing similarly, use extruder 58.Extruder 58 can be single screw extrusion machine, can be also double screw extruder.Resin is heated in extruder 58, is transported to mould 51, and is extruded with the state of melting.The resin of extruding from mould 51, becomes continuously sheet and is extruded, thereby becomes continuous resin sheet 60.The thickness of resin sheet 60 is for example more than 1.0mm and below 4.5mm continuously.
(transfer printing process)
Transfer printing process S2 comprises: for the continuous resin sheet 60 producing by the S1 of thin slice manufacturing process utilize first by pressure roller 52A(by pressure roller) with second by pressure roller 52B(shaped rollers) clamp press thus press operation, to the continuous resin sheet 60 being pressed in pressing operation be close to the second conveying operation of carrying by the state of the side face of pressure roller 52B and by the continuous resin sheet 60 being transferred in conveying operation from the second stripping process of peeling off by the side face of pressure roller 52B (roller mould 53).
(pressing operation)
According to pressing operation, the continuous resin sheet 60 obtaining by the above-mentioned thin slice S1 of manufacturing process is clamped simultaneously and is pressed in the both sides from the thickness direction of thin slice by pressure roller 52B by pressure roller 52A and second by first as shown in Figure 1.
The surface temperature of the continuous resin sheet 60 before now, contacting by pressure roller 52B with second is for example the temperature within the scope of 180 ℃～250 ℃.Surface temperature for example can be adjusted according to the change of the design temperature of the change of the design temperature of extruder 58, mould 51.For example can measure with infra-red thermometer the surface temperature of continuous resin sheet 60.
At this, press in operation, to continuous resin sheet 60 transfer printings, be formed at second by pressure roller 52B(shaped rollers) the shape of surperficial roller mould 53.The roller mould 53 that above-mentioned transfer roll surface possesses is pressed against the surface of continuous resin sheet 60.Its result, the reverse mould of the surface configuration of roller mould 53 is needed on continuous resin sheet 60.
Press pressure roller 52A, 52B as first and second, conventionally use the metal-made roller consisting of metals such as stainless steel, iron and steel, it typically has a diameter from 100mm～500mm.In the situation that using metal-made roller as above-mentioned first and second by pressure roller 52A, 52B, its surface is processed such as also implementing the platings such as chromium plating, copper facing, nickel plating, nickel plating-phosphorus.The first surface (side face) of pressing pressure roller 52A can be minute surface, also can be for implementing the concavo-convex transfer surfaces such as embossing.
Before pressing operation, the prepressing procedures that also can implement to press in advance.In prepressing procedures, with pony press 52D and first, by pressure roller 52A, the continuous resin sheet 60 producing by the S1 of thin slice manufacturing process is clamped, press in advance thus continuous resin sheet 60.The continuous resin sheet 60 being pressed is transferred by the state of the side face of pressure roller 52A to be close to first.Then, by first and second, by pressure roller 52A, 52B, carry out and press operation.
(conveying operation)
Carrying operation is a kind ofly with continuous resin sheet 60, to be close to second by the state of the side face of pressure roller 52B, according to the second operation of carrying continuous resin sheet 60 by the rotation of pressure roller 52B.
(stripping process)
Stripping process be a kind of by continuous resin sheet 60 from the second operation of peeling off by the side face of pressure roller 52B.
According to through above-mentioned operation, manufacture LGP 30.The temperature of the LGP 30 after stripping process has just finished is for example more than 90 ℃.
(bonding process)
In bonding process S3, as shown in Figure 1, use the laminating apparatus 70 of diaphragm that diaphragm 40,42 is fitted in to LGP 30.By first, press pressure roller 72A and second and press pressure roller 72B, the both sides of LGP 30 and diaphragm 40,42 thickness directions from LGP 30 are clamped simultaneously and pressed.According to first, press pressure roller 72A and second and press pressure roller 72B rotation, diaphragm 40 is fitted in the surface 31 of LGP 30, and diaphragm 42 is fitted in the back side 32 of LGP 30.Diaphragm 40 bases make diaphragm roller 72C rotate to be supplied to first by pressure roller 72A, and by the state of the side face of pressure roller 72A, are fitted in LGP 30 to be close to first.Diaphragm 42 bases make diaphragm roller 72D rotate to be supplied to second by pressure roller 72B, and by the state of the side face of pressure roller 72B, are fitted in LGP 30 to be close to second.
The temperature of the LGP 30 during for laminating, can control by adjusting the temperature of the LGP 30 after stripping process has just finished, and can be 40～70 ℃, also can be 50～60 ℃.The temperature of the LGP 30 during for laminating, for example, can adjust according to the distance between the manufacturing installation 50 of LGP and the laminating apparatus 70 of diaphragm.
(cut-out operation)
In cutting off operation S4, as shown in Figure 1, use shearing device 80 LGP 30 that is fitted with diaphragm 40,42 to be cut to the size of regulation.Thus, can obtain the LGP 90 with diaphragm shown in Fig. 4.
Above, to of the present invention, be preferred embodiment at length illustrated, but the present invention is not limited to above-mentioned embodiment.
(embodiment)
Below, based on embodiment, reference example and comparative example, the present invention is more specifically described, but the present invention is not limited to following embodiment.
(embodiment 1)
The manufacturing installation that uses the LGP with diaphragm shown in Fig. 1, fits in diaphragm the LGP that is preheated to 40 ℃.As LGP, used and there is the surperficial shape LGP that is formed with protuberance.On the surface that is formed with protuberance, be fitted with diaphragm.As diaphragm, used polypropylene film (trade name: L7330, Hitachi changes into company's system).Then, diaphragm and LGP are cut to the size of width 25mm * length 300mm, have made thus the LGP with diaphragm.
For be preheated to 70 ℃ rather than be preheated to 40 ℃ LGP similarly, diaphragm is fitted in to LGP, diaphragm and LGP are cut to the size of width 25mm * length 300mm, made thus the LGP with diaphragm.
For two kinds of obtained LGPs with diaphragm, follow JISZ0237, and utilize AUTOGRAPH to divide along its length diaphragm is peeled off to measure peel strength (N/25mm) with 180 ° of directions with draw speed 300mm/.The results are shown in table 1.In addition, after being placed to 40 minutes (heat-resisting test) in the baking oven of 70 ℃, two kinds of LGPs with diaphragm of above-mentioned acquisition by its taking-up and be cooled to room temperature, and similarly measured peel strength.The results are shown in 1.
(adhesiveness evaluation)
For be preheated to 50～60 ℃ rather than be preheated to 40 ℃ LGP similarly, diaphragm is fitted in to LGP, diaphragm and LGP are cut to A4 size, made thus the LGP with diaphragm.For the obtained LGP with diaphragm, evaluated more than whether diaphragm be stripped from length 5mm from end.Situation about diaphragm being stripped from from end more than 5mm has been considered as peeling off.The situation that peeling off by diaphragm from end is less than 5mm is considered as without peeling off.The results are shown in table 1.
(peel property evaluation)
For the LGP with diaphragm that is cut to above-mentioned A4 size, that has evaluated diaphragm peels off easiness (workability).With zero, representing not apply excessive power just can be by the easiness of peeling off in situation about once diaphragm being peeled off.With * representing cannot be by the easiness of peeling off in situation about once diaphragm being peeled off.With △ represent zero and * between peel off easiness.The results are shown in table 1.In addition, after the LGP with diaphragm that is cut to above-mentioned A4 size is placed to 40 minutes in the baking oven of 70 ℃, by its taking-up and be cooled to room temperature, and similarly evaluated and peeled off easiness.The results are shown in table 1.
(embodiment 2)
Except having used polypropylene film (trade name: FM-470, king's converted paper company system) in addition as diaphragm, make similarly to Example 1 the LGP with diaphragm, and evaluate.The results are shown in table 1.
(embodiment 3)
Except having used polypropylene film (trade name: FM-382, king's converted paper company system) in addition as diaphragm, make similarly to Example 1 the LGP with diaphragm, and evaluate.The results are shown in table 1.
(comparative example 1)
Except having used polyethylene film (trade name: ML2020, Hitachi changes into company's system) in addition as diaphragm, make similarly to Example 1 LGP, mensuration peel strength with diaphragm, and carry out adhesiveness evaluation.The results are shown in table 1.
(comparative example 2)
Except having used polypropylene film (trade name: XML-K171, Hitachi changes into company's system) in addition as diaphragm, make similarly to Example 1 the LGP with diaphragm, and evaluate.The results are shown in 1.
(reference example 1)
Except having used, there is smooth surperficial LGP (plane LGP) and have the surperficial shape LGP that is formed with protuberance to substitute, similarly make the LGP with diaphragm with comparative example 1, and measure peel strength.The results are shown in table 1.
[table 1]
As shown in table 1, in embodiment 1～3, can obtain all outstanding LGPs with diaphragm of adhesiveness and peel property both sides.On the other hand, in comparative example 1～2, at least one party of adhesiveness and peel property, can not obtain good result.So known, in shape LGP, by the surface that is formed with protuberance and the peel strength between diaphragm of LGP are made as to specific scope, can obtain all outstanding LGPs with diaphragm of adhesiveness and peel property both sides.
Description of reference numerals
30 ... LGP; 31 ... surface; 35 ... protuberance; 40,42 ... diaphragm; 51 ... mould; 52A ... first presses pressure roller; 52B ... second presses pressure roller (shaped rollers); 52D ... pony press; 53 ... roller mould; 57 ... resin input port; 58 ... extruder; 60 ... continuous resin sheet; 90 ... LGP with diaphragm.
Claims (3)
1. with a LGP for diaphragm, wherein, possess:
There is the surperficial LGP that is formed with protuberance; And
Fit in the diaphragm on the described surface that is formed with described protuberance,
The described LGP and the peel strength between described diaphragm that described diaphragm are fitted in after the described LGP that is heated to 40 ℃ are 0.1～0.8N/25mm,
The described LGP and the peel strength between described diaphragm that described diaphragm are fitted in after the described LGP that is heated to 70 ℃ are 0.1～0.8N/25mm.
2. the LGP with diaphragm according to claim 1, wherein,
Described diaphragm is being fitted in after the described LGP that is heated to 40 ℃, described LGP and the peel strength between described diaphragm of at 70 ℃, carrying out after the heat treatment of 40 minutes are 0.1～0.8N/25mm,
Described diaphragm is being fitted in after the described LGP that is heated to 70 ℃, described LGP and the peel strength between described diaphragm of at 70 ℃, carrying out after the heat treatment of 40 minutes are 0.1～0.8N/25mm.
3. the diaphragm for the LGP with diaphragm described in claim 1 or 2.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011125402A JP2012252209A (en) | 2011-06-03 | 2011-06-03 | Light guide plate with protective film |
| JP2011-125402 | 2011-06-03 | ||
| PCT/JP2012/063930 WO2012165479A1 (en) | 2011-06-03 | 2012-05-30 | Light guide plate equipped with protective film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103562617A true CN103562617A (en) | 2014-02-05 |
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ID=47259331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280026573.0A Pending CN103562617A (en) | 2011-06-03 | 2012-05-30 | Light guide plate equipped with protective film |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2012252209A (en) |
| KR (1) | KR20140035990A (en) |
| CN (1) | CN103562617A (en) |
| TW (1) | TW201302351A (en) |
| WO (1) | WO2012165479A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016101355A1 (en) * | 2014-12-26 | 2016-06-30 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and liquid crystal displaydevice |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5705895B2 (en) * | 2013-02-20 | 2015-04-22 | 住友化学株式会社 | Optical sheet manufacturing method and surface light source device manufacturing method |
| KR101711974B1 (en) * | 2015-07-27 | 2017-03-06 | 주식회사 에이치비테크놀러지 | Light guide plate extrusion manufacturing method |
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| JPH08170056A (en) * | 1994-12-20 | 1996-07-02 | Sumitomo Chem Co Ltd | Surface protecting film and acrylic resin plate surface protected with the same film |
| JP2008150503A (en) * | 2006-12-18 | 2008-07-03 | Tosoh Corp | Resin composition for surface-protective film and film using the same |
| JP2009029901A (en) * | 2007-07-26 | 2009-02-12 | Tosoh Corp | Resin composition and surface-protecting film formed using the same |
| CN101526641A (en) * | 2008-03-07 | 2009-09-09 | 洪文修 | Production line for light guide plates |
| CN201348663Y (en) * | 2008-12-19 | 2009-11-18 | 东莞市奕东电子有限公司 | Light guide plate |
| CN101929655A (en) * | 2009-06-17 | 2010-12-29 | 惠和株式会社 | Semi-transparent reflective sheet and backlight unit using the same |
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- 2011-06-03 JP JP2011125402A patent/JP2012252209A/en not_active Withdrawn
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2012
- 2012-05-30 KR KR1020147000052A patent/KR20140035990A/en not_active Application Discontinuation
- 2012-05-30 CN CN201280026573.0A patent/CN103562617A/en active Pending
- 2012-05-30 WO PCT/JP2012/063930 patent/WO2012165479A1/en active Application Filing
- 2012-06-01 TW TW101119842A patent/TW201302351A/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08170056A (en) * | 1994-12-20 | 1996-07-02 | Sumitomo Chem Co Ltd | Surface protecting film and acrylic resin plate surface protected with the same film |
| JP2008150503A (en) * | 2006-12-18 | 2008-07-03 | Tosoh Corp | Resin composition for surface-protective film and film using the same |
| JP2009029901A (en) * | 2007-07-26 | 2009-02-12 | Tosoh Corp | Resin composition and surface-protecting film formed using the same |
| CN101526641A (en) * | 2008-03-07 | 2009-09-09 | 洪文修 | Production line for light guide plates |
| CN201348663Y (en) * | 2008-12-19 | 2009-11-18 | 东莞市奕东电子有限公司 | Light guide plate |
| CN101929655A (en) * | 2009-06-17 | 2010-12-29 | 惠和株式会社 | Semi-transparent reflective sheet and backlight unit using the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016101355A1 (en) * | 2014-12-26 | 2016-06-30 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module and liquid crystal displaydevice |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012252209A (en) | 2012-12-20 |
| WO2012165479A1 (en) | 2012-12-06 |
| KR20140035990A (en) | 2014-03-24 |
| TW201302351A (en) | 2013-01-16 |
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Application publication date: 20140205 |